From e375a0b11f72e45f2a43f353c14c40e508885db7 Mon Sep 17 00:00:00 2001
From: edwin <edwinman7@yahoo.com>
Date: Tue, 6 Dec 2022 15:00:19 +0800
Subject: [PATCH 1/3] define an empty constructor and overload DHT::begin

---
 DHT.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 DHT.h   |  2 ++
 2 files changed, 42 insertions(+)

diff --git a/DHT.cpp b/DHT.cpp
index a48ac74..f8fa3d4 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -30,6 +30,24 @@
   UINT32_MAX /**< Used programmatically for timeout.                           \
                    Not a timeout duration. Type: uint32_t. */
 
+/**
+ * @brief Instantiates a default DHT class
+ * 
+ */
+DHT::DHT() {
+  _pin = 2;  // pin 2 set as the default data pin 
+  _type = DHT11; // using the DHT11 sensor as the default sensor type.
+  // Note that pin 2 and DHT11 are just default values to
+  // initialize members _pin and _type in the class definition.
+  // They can be modified via DHT::begin(uint8_t pin, uint8_t type, uint8_t usec).
+#ifdef __AVR
+  _bit = digitalPinToBitMask(pin);
+  _port = digitalPinToPort(pin);
+#endif
+  _maxcycles = microsecondsToClockCycles(1000); // 1 millisecond timeout for
+                                                // reading pulses from DHT sensor.
+}
+
 /*!
  *  @brief  Instantiates a new DHT class
  *  @param  pin
@@ -72,6 +90,28 @@ void DHT::begin(uint8_t usec) {
   pullTime = usec;
 }
 
+/**
+ * @brief Setup sensor pins and set pull timings
+ * 
+ * @param pin 
+ *        pin number that sensor is connected
+ * @param type 
+ *        type of sensor
+ * @param usec 
+ *        Optionally pass pull-up time (in microseconds) before DHT reading 
+ * starts. Default is 55 (see function declaration in DHT.h).
+ */
+void DHT::begin(uint8_t pin, uint8_t type, uint8_t usec)
+{
+  _pin = pin;
+  _type = type;
+#ifdef __AVR
+  _bit = digitalPinToBitMask(pin);
+  _port = digitalPinToPort(pin);
+#endif
+  begin(usec);
+}
+
 /*!
  *  @brief  Read temperature
  *  @param  S
diff --git a/DHT.h b/DHT.h
index 95570e1..5e3db94 100644
--- a/DHT.h
+++ b/DHT.h
@@ -62,8 +62,10 @@ static const uint8_t AM2301{21}; /**< AM2301 */
  */
 class DHT {
 public:
+  DHT();
   DHT(uint8_t pin, uint8_t type, uint8_t count = 6);
   void begin(uint8_t usec = 55);
+  void begin(uint8_t pin, uint8_t type, uint8_t usec = 55);
   float readTemperature(bool S = false, bool force = false);
   float convertCtoF(float);
   float convertFtoC(float);

From 97d11f3fd5fc2b3aa1157a9afb8b9f2920a89682 Mon Sep 17 00:00:00 2001
From: edwin <edwinman7@yahoo.com>
Date: Tue, 6 Dec 2022 15:21:41 +0800
Subject: [PATCH 2/3] define an empty constructor and overload DHT::begin

---
 DHT.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/DHT.cpp b/DHT.cpp
index f8fa3d4..730d6ee 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -41,8 +41,8 @@ DHT::DHT() {
   // initialize members _pin and _type in the class definition.
   // They can be modified via DHT::begin(uint8_t pin, uint8_t type, uint8_t usec).
 #ifdef __AVR
-  _bit = digitalPinToBitMask(pin);
-  _port = digitalPinToPort(pin);
+  _bit = digitalPinToBitMask(_pin);
+  _port = digitalPinToPort(_pin);
 #endif
   _maxcycles = microsecondsToClockCycles(1000); // 1 millisecond timeout for
                                                 // reading pulses from DHT sensor.

From 3f20e8520200243e3fe7eae6af5780ae2008c135 Mon Sep 17 00:00:00 2001
From: edWin-m <edwinman7@yahoo.com>
Date: Tue, 6 Dec 2022 18:06:23 +0800
Subject: [PATCH 3/3] format check with clang

---
 DHT.cpp | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/DHT.cpp b/DHT.cpp
index 730d6ee..089f9ba 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -32,20 +32,21 @@
 
 /**
  * @brief Instantiates a default DHT class
- * 
+ *
  */
 DHT::DHT() {
-  _pin = 2;  // pin 2 set as the default data pin 
+  _pin = 2;      // pin 2 set as the default data pin
   _type = DHT11; // using the DHT11 sensor as the default sensor type.
-  // Note that pin 2 and DHT11 are just default values to
-  // initialize members _pin and _type in the class definition.
-  // They can be modified via DHT::begin(uint8_t pin, uint8_t type, uint8_t usec).
+  // Note that pin 2 and DHT11 are just default values to initialize members
+  // _pin and _type in the class definition. They can be modified via
+  // DHT::begin(uint8_t pin, uint8_t type, uint8_t usec).
 #ifdef __AVR
   _bit = digitalPinToBitMask(_pin);
   _port = digitalPinToPort(_pin);
 #endif
-  _maxcycles = microsecondsToClockCycles(1000); // 1 millisecond timeout for
-                                                // reading pulses from DHT sensor.
+  _maxcycles =
+      microsecondsToClockCycles(1000); // 1 millisecond timeout for
+                                       // reading pulses from DHT sensor.
 }
 
 /*!
@@ -92,17 +93,16 @@ void DHT::begin(uint8_t usec) {
 
 /**
  * @brief Setup sensor pins and set pull timings
- * 
- * @param pin 
+ *
+ * @param pin
  *        pin number that sensor is connected
- * @param type 
+ * @param type
  *        type of sensor
- * @param usec 
- *        Optionally pass pull-up time (in microseconds) before DHT reading 
+ * @param usec
+ *        Optionally pass pull-up time (in microseconds) before DHT reading
  * starts. Default is 55 (see function declaration in DHT.h).
  */
-void DHT::begin(uint8_t pin, uint8_t type, uint8_t usec)
-{
+void DHT::begin(uint8_t pin, uint8_t type, uint8_t usec) {
   _pin = pin;
   _type = type;
 #ifdef __AVR